CPT Residual Limb Management & Socket Design Flashcards
6 cards from real CPT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CPT Residual Limb Management & Socket Design flashcards as text
What is a 'mature' residual limb in the context of prosthetic fitting?
Answer: A residual limb with stable volume, healed tissue, and minimal edema ready for definitive socket fabrication
A mature residual limb has achieved volume stability with fully healed incision and minimal edema, making it ready for fabrication of a definitive (permanent) prosthetic socket.
Which socket design for transtibial amputees loads the patellar tendon as a primary weight-bearing surface?
Answer: Patellar tendon bearing (PTB) socket
The patellar tendon bearing socket concentrates load over the patellar tendon bar while relieving pressure over sensitive bony prominences of the lower leg.
What is the primary difference between a PTB (patellar tendon bearing) socket and a TSB (total surface bearing) socket?
Answer: TSB distributes load over the entire residual limb surface while PTB concentrates load on specific anatomical sites
TSB sockets distribute pressure across the entire residual limb surface for even load sharing, whereas PTB sockets focus load on designated tolerant areas such as the patellar tendon.
A transtibial residual limb shows skin redness over the fibular head after prosthetic use. What is the correct corrective action?
Answer: Add a relief area in the socket at the fibular head location
Skin redness over the fibular head indicates excessive socket pressure at that bony prominence, corrected by adding a relief area (pocket) in the socket to unload the area.
What information does a residual limb cast or scan capture that is essential for accurate socket fabrication?
Answer: The exact three-dimensional shape and contours of the residual limb
A cast or scan captures the precise three-dimensional geometry of the residual limb, which is the foundation for fabricating a socket that matches the limb's unique contours.
When reviewing a transtibial definitive socket prior to delivery, which area of the residual limb should ALWAYS have a prominent relief to avoid pressure-related skin breakdown?
Answer: Both fibular head and anterior tibial crest / distal tibia
Both the fibular head and the anterior tibial crest/distal tibia are bony prominences that require relief areas in a transtibial socket to prevent pressure sores.